function like(btn,entityType,entityId,entityUserId) {

    $.post(
            COUNTENT_PATH + "/like",
            {"entityType":entityType,"entityId":entityId,"entityUserId":entityUserId},
        function (data) {
            data = $.parseJSON(data);
            if (data.code == 0){
                $(btn).children("i").text(data.likeCount);
                $(btn).children("b").text(data.likeStatus==1?'已赞':"赞");
            }else {
                alert(data.msg);
            }
        }
    )
}